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Basic Troubleshooting: Enterprise Switches
IC39480, IC39240, IC3648, IC3624, IC3724PWR

In the unlikely event that the switch does not operate properly, follow the troubleshooting tips below. If more help is needed, contact Asante’s technical support at support@asante.com.

Problem Possible Solutions
The Power LED is not lit. Check the power connection. Plug the power cord into another known working AC outlet. The primary power supply has failed. Install the optional external power supply and have the primary power supply serviced as soon as possible.
The 10/100/1000 port Link LEDs are not lit. Check the cable connections. Make sure the connectors are seated correctly in each port, and that the correct type of cable is used in each port. See Connecting to the Network for more information.
The GBIC Link LED is not lit. Check the GBIC connector. Make sure the cables are inserted correctly, with the Transmit (Tx) connector on one side of the link connected to the Receive (Rx) connector on the other side of the link.
Cannot establish communication to another device (switch, router, workstation, etc.). Make sure the Link LED for the port in use is on. Make sure the correct cable type is used. See Connecting to the Network for more information on cabling procedures. Make sure the IP address, subnet mask, and VLAN membership of the switch are correct Make sure the switch port and the device are both in the same VLAN Try to connect to a different port
Cannot auto-negotiate the port speed. Make sure that auto-negotiation is supported and enabled on both sides of the link (in both devices).

 

Connecting to the Network

The switch can connect to an Ethernet network with the switch turned on or off. Use the following procedure to make the network connections:
  • Connect the network devices to the switch, following the cable guidelines outlined below.
  • After the switch is connected to the network, it can be configured for management capabilities (see the following chapters for information on configuration).

10/100/1000BaseT Ports Cabling Procedures

The 10/100/1000 ports on the switch allow for the connection of 10BaseT, 100BaseTX, or 1000BaseT network devices. The ports are compatible with IEEE 802.3 and 802.3u standards.

Important: The switch must be located within 100 meters of its attached 10BaseT or 100BaseTX devices.

Use the following guidelines to determine the cabling requirements for the network devices:

Connecting to Network Station: Category 5 UTP (Unshielded Twisted-Pair) straight-through cable (100 m maximum) with RJ-45 connectors Connecting to Repeater/Hub/Switch’s Uplink port: Category 5, UTP straight-through cable (100 m maximum) with RJ-45 connectors
Note: These switches have no specific uplink ports. All 10/100/1000 ports on these switches are auto-sensing MDI/MDI-X. This advanced feature means that when the ports are operating at 10/100Mbps, they will automatically determine whether the device at the other end of the link is a hub, switch, or workstation, and adjust its signals accordingly. No crossover cables are required. Although 10/100BaseT requires only pins 1, 2, 3, and 6, you should use cables with all eight wires connected as shown in Table 2-2 below.
Connect to the Network

1000BaseT requires that all four pairs (8 wires) be connected correctly, using Category 5 or better Unshielded Twisted Pair (UTP) cable (to a distance of 100 meters). Table 2-2 shows the correct pairing of all eight wires.

Pin Number

Pair Number & Wire Colors

1

2 White / Orange

2

2 Orange / White

3

3 White / Green

4

1 Blue / White

5

1 White / Blue

6

3 Green / White

7

4 White / Brown

8

4 Brown / White

Gigabit Ethernet Ports Cabling Procedures

Cabling requirements for the optional hardware modules depend on the type of module installed. Use the following guidelines to determine the particular cabling requirements of the module(s):

1000BaseSX GBIC: Cables with SC-type fiber connectors; 62.5µ multi-mode fiber (MMF) media up to 275 m (902'), or 50µ MMF media up to 550 m (1805')
1000BaseLX GBIC: Cables with SC-type fiber connectors; 10µ single-mode fiber media up to 5 km (16,405')
1000BaseLH GBIC: Cables with SC-type fiber connectors; 10µ single-mode fiber media up to 20 km (65,617')
1000BaseLX Long Haul GBIC: Cables with SC-type fiber connectors; 10µ single-mode fiber media up to 100 km (328,100')
1000BaseLZ GBIC: Cables with SC-type fiber connectors; 10µ single-mode fiber media up to 120 km (393,701')
1000BaseT: Category 5 or better Unshielded Twisted Pair (UTP) cable up to 100 m (328.1')
When attaching a workstation to the switch, a standard straight-through CAT5 cable may be used, even when the workstation is attached via a patch panel. No crossover cable is needed with the MDX/MDI ports. The switch should be kept off the network until proper IP settings have been set.

 


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